Fwd: reset vector issue

[ron minnich]

Very interesting note. We've never seen this before. Comments?

ron

---------- Forwarded message ----------
From: Naresh G. Solanki 
Date: Thu, Nov 7, 2013 at 6:00 AM
Subject: reset vector issue
To: [e-mail]

Dear sir,

I've worked with coreboot as hobby work.

I'd tested coreboot on Intel Z520P/US15WP chipset & found that it was
not working.

I reverse engineered original bios developed for that board &  found that the
first instruction it was executing immediately after CPU reset was
wbinvd ( writeback & invalidate cache) instead of directly jump
instruction.

In file reset.inc
After entering  0x0f , 0x09 (wbinvd) immediately before jump ( 0xe9 )
I've found that coreboot started working in my board.

Please consider updating this in coreboot source.

Thank You,
Naresh G Solanki
India

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